Cassini Visual and Infrared Mapping Spectrometer observations of Iapetus: Detection of CO2

B. J. Buratti; D. P. Cruikshank; R. H. Brown; R. N. Clark; J. M. Bauer; R. Jaumann; T. B. Mccord; D. P. Simonelli; C. A. Hibbitts; G. B. Hansen; T. C. Owen; K. H. Baines; G. Bellucci; J. P. Bibring; F. Capaccioni; P. Cerroni; A. Coradini; P. Drossart; V. Formisano; Y. Langevin; D. L. Matson; V. Mennella; R. M. Nelson; P. D. Nicholson; B. Sicardy; C. Sotin; T. L. Roush; K. Soderlund; A. Muradyan

doi:10.1086/429800

Cassini Visual and Infrared Mapping Spectrometer observations of Iapetus: Detection of CO₂

B. J. Buratti, D. P. Cruikshank, R. H. Brown, R. N. Clark, J. M. Bauer, R. Jaumann, T. B. Mccord, D. P. Simonelli, C. A. Hibbitts, G. B. Hansen, T. C. Owen, K. H. Baines, G. Bellucci, J. P. Bibring, F. Capaccioni, P. Cerroni, A. Coradini, P. Drossart, V. Formisano, Y. LangevinD. L. Matson, V. Mennella, R. M. Nelson, P. D. Nicholson, B. Sicardy, C. Sotin, T. L. Roush, K. Soderlund, A. Muradyan

Lunar and Planetary Lab

Research output: Contribution to journal › Article › peer-review

93 Scopus citations

Abstract

The Visual and Infrared Mapping Spectrometer (VIMS) instrument aboard the Cassini spacecraft obtained its first spectral map of the satellite lapetus in which new absorption bands are seen in the spectra of both the low-albedo hemisphere and the H₂O ice-rich hemisphere. Carbon dioxide is identified in the low-albedo material, probably as a photochemically produced molecule that is trapped in H₂O ice or in some mineral or complex organic solid. Other absorption bands are unidentified. The spectrum of the low-albedo hemisphere is satisfactorily modeled with a combination of organic tholin, poly-HCN, and small amounts of H₂O ice and Fe ₂O₃. The high-albedo hemisphere is modeled with H ₂O ice slightly darkened with tholin. The detection of CO₂ in the low-albedo material on the leading hemisphere supports the contention that it is carbon-bearing material from an external source that has been swept up by the satellite's orbital motion.

Original language	English (US)
Pages (from-to)	L149-L152
Journal	Astrophysical Journal
Volume	622
Issue number	2 II
DOIs	https://doi.org/10.1086/429800
State	Published - Apr 1 2005

Keywords

Planets and satellites: individual (Iapetus)
Solar system: formation

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1086/429800

Cite this

Buratti, B. J., Cruikshank, D. P., Brown, R. H., Clark, R. N., Bauer, J. M., Jaumann, R., Mccord, T. B., Simonelli, D. P., Hibbitts, C. A., Hansen, G. B., Owen, T. C., Baines, K. H., Bellucci, G., Bibring, J. P., Capaccioni, F., Cerroni, P., Coradini, A., Drossart, P., Formisano, V., ... Muradyan, A. (2005). Cassini Visual and Infrared Mapping Spectrometer observations of Iapetus: Detection of CO₂. Astrophysical Journal, 622(2 II), L149-L152. https://doi.org/10.1086/429800

Buratti, BJ, Cruikshank, DP, Brown, RH, Clark, RN, Bauer, JM, Jaumann, R, Mccord, TB, Simonelli, DP, Hibbitts, CA, Hansen, GB, Owen, TC, Baines, KH, Bellucci, G, Bibring, JP, Capaccioni, F, Cerroni, P, Coradini, A, Drossart, P, Formisano, V, Langevin, Y, Matson, DL, Mennella, V, Nelson, RM, Nicholson, PD, Sicardy, B, Sotin, C, Roush, TL, Soderlund, K & Muradyan, A 2005, 'Cassini Visual and Infrared Mapping Spectrometer observations of Iapetus: Detection of CO₂', Astrophysical Journal, vol. 622, no. 2 II, pp. L149-L152. https://doi.org/10.1086/429800

@article{a760360d238f48aba4be66efe7e8c3f3,

title = "Cassini Visual and Infrared Mapping Spectrometer observations of Iapetus: Detection of CO2",

abstract = "The Visual and Infrared Mapping Spectrometer (VIMS) instrument aboard the Cassini spacecraft obtained its first spectral map of the satellite lapetus in which new absorption bands are seen in the spectra of both the low-albedo hemisphere and the H2O ice-rich hemisphere. Carbon dioxide is identified in the low-albedo material, probably as a photochemically produced molecule that is trapped in H2O ice or in some mineral or complex organic solid. Other absorption bands are unidentified. The spectrum of the low-albedo hemisphere is satisfactorily modeled with a combination of organic tholin, poly-HCN, and small amounts of H2O ice and Fe 2O3. The high-albedo hemisphere is modeled with H 2O ice slightly darkened with tholin. The detection of CO2 in the low-albedo material on the leading hemisphere supports the contention that it is carbon-bearing material from an external source that has been swept up by the satellite's orbital motion.",

keywords = "Planets and satellites: individual (Iapetus), Solar system: formation",

author = "Buratti, {B. J.} and Cruikshank, {D. P.} and Brown, {R. H.} and Clark, {R. N.} and Bauer, {J. M.} and R. Jaumann and Mccord, {T. B.} and Simonelli, {D. P.} and Hibbitts, {C. A.} and Hansen, {G. B.} and Owen, {T. C.} and Baines, {K. H.} and G. Bellucci and Bibring, {J. P.} and F. Capaccioni and P. Cerroni and A. Coradini and P. Drossart and V. Formisano and Y. Langevin and Matson, {D. L.} and V. Mennella and Nelson, {R. M.} and Nicholson, {P. D.} and B. Sicardy and C. Sotin and Roush, {T. L.} and K. Soderlund and A. Muradyan",

note = "Funding Information: This research was performed while J. M. B and D. P. S. were National Research Council Postdoctoral and Senior Research Associates at JPL. K. S. was a Planetary Geology and Geophysics Intern at JPL, and A. M. was a SIRI Intern. We are grateful to Thomas Momary for assistance with Figure 1. This work was performed at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.",

year = "2005",

month = apr,

day = "1",

doi = "10.1086/429800",

language = "English (US)",

volume = "622",

pages = "L149--L152",

journal = "Astrophysical Journal",

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publisher = "American Astronomical Society",

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TY - JOUR

T1 - Cassini Visual and Infrared Mapping Spectrometer observations of Iapetus

T2 - Detection of CO2

AU - Buratti, B. J.

AU - Cruikshank, D. P.

AU - Brown, R. H.

AU - Clark, R. N.

AU - Bauer, J. M.

AU - Jaumann, R.

AU - Mccord, T. B.

AU - Simonelli, D. P.

AU - Hibbitts, C. A.

AU - Hansen, G. B.

AU - Owen, T. C.

AU - Baines, K. H.

AU - Bellucci, G.

AU - Bibring, J. P.

AU - Capaccioni, F.

AU - Cerroni, P.

AU - Coradini, A.

AU - Drossart, P.

AU - Formisano, V.

AU - Langevin, Y.

AU - Matson, D. L.

AU - Mennella, V.

AU - Nelson, R. M.

AU - Nicholson, P. D.

AU - Sicardy, B.

AU - Sotin, C.

AU - Roush, T. L.

AU - Soderlund, K.

AU - Muradyan, A.

N1 - Funding Information: This research was performed while J. M. B and D. P. S. were National Research Council Postdoctoral and Senior Research Associates at JPL. K. S. was a Planetary Geology and Geophysics Intern at JPL, and A. M. was a SIRI Intern. We are grateful to Thomas Momary for assistance with Figure 1. This work was performed at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.

PY - 2005/4/1

Y1 - 2005/4/1

N2 - The Visual and Infrared Mapping Spectrometer (VIMS) instrument aboard the Cassini spacecraft obtained its first spectral map of the satellite lapetus in which new absorption bands are seen in the spectra of both the low-albedo hemisphere and the H2O ice-rich hemisphere. Carbon dioxide is identified in the low-albedo material, probably as a photochemically produced molecule that is trapped in H2O ice or in some mineral or complex organic solid. Other absorption bands are unidentified. The spectrum of the low-albedo hemisphere is satisfactorily modeled with a combination of organic tholin, poly-HCN, and small amounts of H2O ice and Fe 2O3. The high-albedo hemisphere is modeled with H 2O ice slightly darkened with tholin. The detection of CO2 in the low-albedo material on the leading hemisphere supports the contention that it is carbon-bearing material from an external source that has been swept up by the satellite's orbital motion.

AB - The Visual and Infrared Mapping Spectrometer (VIMS) instrument aboard the Cassini spacecraft obtained its first spectral map of the satellite lapetus in which new absorption bands are seen in the spectra of both the low-albedo hemisphere and the H2O ice-rich hemisphere. Carbon dioxide is identified in the low-albedo material, probably as a photochemically produced molecule that is trapped in H2O ice or in some mineral or complex organic solid. Other absorption bands are unidentified. The spectrum of the low-albedo hemisphere is satisfactorily modeled with a combination of organic tholin, poly-HCN, and small amounts of H2O ice and Fe 2O3. The high-albedo hemisphere is modeled with H 2O ice slightly darkened with tholin. The detection of CO2 in the low-albedo material on the leading hemisphere supports the contention that it is carbon-bearing material from an external source that has been swept up by the satellite's orbital motion.

KW - Planets and satellites: individual (Iapetus)

KW - Solar system: formation

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JO - Astrophysical Journal

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IS - 2 II

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